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Message-ID: <20200910075752.GC26874@shao2-debian>
Date:   Thu, 10 Sep 2020 15:57:52 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Michael Ellerman <mpe@...erman.id.au>,
        Andrew Morton <akpm@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        lkp@...el.com
Subject: [mm/debug_vm_pgtable/locks] c50eb1ed65:
 BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c

Greeting,

FYI, we noticed the following commit (built with gcc-9):

commit: c50eb1ed654b59efad96884cc26895a0acd7a15a ("mm/debug_vm_pgtable/locks: move non page table modifying test together")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master


in testcase: boot

on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 8G

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+----------------------------------------------------------------------+------------+------------+
|                                                                      | 5c65ca35e5 | c50eb1ed65 |
+----------------------------------------------------------------------+------------+------------+
| boot_successes                                                       | 18         | 0          |
| boot_failures                                                        | 0          | 10         |
| BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c | 0          | 10         |
+----------------------------------------------------------------------+------------+------------+


If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp@...el.com>


[    9.409233] BUG: sleeping function called from invalid context at mm/page_alloc.c:4822
[    9.410557] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper
[    9.411932] no locks held by swapper/1.
[    9.412595] CPU: 0 PID: 1 Comm: swapper Not tainted 5.9.0-rc3-00323-gc50eb1ed654b5 #2
[    9.413824] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[    9.415207] Call Trace:
[    9.415651]  ? ___might_sleep.cold+0xa7/0xcc
[    9.416367]  ? __alloc_pages_nodemask+0x14c/0x5b0
[    9.417055]  ? swap_migration_tests+0x50/0x293
[    9.417704]  ? debug_vm_pgtable+0x4bc/0x708
[    9.418287]  ? swap_migration_tests+0x293/0x293
[    9.418911]  ? do_one_initcall+0x82/0x3cb
[    9.419465]  ? parse_args+0x1bd/0x280
[    9.419983]  ? rcu_read_lock_sched_held+0x36/0x60
[    9.420673]  ? trace_initcall_level+0x1f/0xf3
[    9.421279]  ? trace_initcall_level+0xbd/0xf3
[    9.421881]  ? do_basic_setup+0x9d/0xdd
[    9.422410]  ? do_basic_setup+0xc3/0xdd
[    9.422938]  ? kernel_init_freeable+0x72/0xa3
[    9.423539]  ? rest_init+0x134/0x134
[    9.424055]  ? kernel_init+0x5/0x12c
[    9.424574]  ? ret_from_fork+0x19/0x30
[    9.425310] Key type ._fscrypt registered
[    9.426019] Key type .fscrypt registered
[    9.426707] Key type fscrypt-provisioning registered
[    9.427637] fs-verity: Initialized fs-verity
[    9.840093] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input3
[    9.853197] e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
[    9.877389] Sending DHCP requests ., OK
[    9.879581] IP-Config: Got DHCP answer from 10.0.2.2, my address is 10.0.2.15
[    9.880824] IP-Config: Complete:
[    9.881354]      device=eth0, hwaddr=52:54:00:12:34:56, ipaddr=10.0.2.15, mask=255.255.255.0, gw=10.0.2.2
[    9.882905]      host=vm-snb-i386-109, domain=, nis-domain=(none)
[    9.883902]      bootserver=10.0.2.2, rootserver=10.0.2.2, rootpath=
[    9.883905]      nameserver0=10.0.2.3
[    9.894061] Freeing unused kernel image (initmem) memory: 656K
[    9.895575] Write protecting kernel text and read-only data: 23520k
[    9.898343] Run /init as init process
[    9.899004]   with arguments:
[    9.899514]     /init
[    9.899927]   with environment:
[    9.900487]     HOME=/
[    9.900987]     TERM=linux
[    9.901465]     user=lkp
[    9.901908]     job=/lkp/jobs/scheduled/vm-snb-i386-109/boot-1-yocto-i386-minimal-20190520.cgz-c50eb1ed654b59efad96884cc26895a0acd7a15a-20200910-4374-1mjkprf-3.yaml
[    9.904329]     ARCH=i386
[    9.904786]     kconfig=i386-randconfig-r026-20200909
[    9.905564]     branch=linux-next/master
[    9.906202]     commit=c50eb1ed654b59efad96884cc26895a0acd7a15a
[    9.907202]     BOOT_IMAGE=/pkg/linux/i386-randconfig-r026-20200909/gcc-9/c50eb1ed654b59efad96884cc26895a0acd7a15a/vmlinuz-5.9.0-rc3-00323-gc50eb1ed654b5
[    9.909484]     max_uptime=600
[    9.910007]     RESULT_ROOT=/result/boot/1/vm-snb-i386/yocto-i386-minimal-20190520.cgz/i386-randconfig-r026-20200909/gcc-9/c50eb1ed654b59efad96884cc26895a0acd7a15a/3
[    9.912177]     LKP_SERVER=inn
[    9.912636]     selinux=0
[    9.913011]     softlockup_panic=1
[    9.913484]     vga=normal
[    9.931703] process 143 (init) attempted a POSIX timer syscall while CONFIG_POSIX_TIMERS is not set
Starting udev
[   10.061529] pidof (167) used greatest stack depth: 6528 bytes left
[   10.070496] udevd[168]: starting version 3.2.7
[   10.072314] random: udevd: uninitialized urandom read (16 bytes read)
[   10.073812] random: udevd: uninitialized urandom read (16 bytes read)
[   10.075031] random: udevd: uninitialized urandom read (16 bytes read)
[   10.079997] udevd[168]: specified group 'kvm' unknown
[   10.087732] udevd[169]: starting eudev-3.2.7
[   10.225841] udevd[169]: specified group 'kvm' unknown
[   10.392367] parport_pc 00:04: reported by Plug and Play ACPI
[   10.394027] parport0: PC-style at 0x378, irq 7 [PCSPP(,...)]
[   10.428374] lp0: using parport0 (interrupt-driven).
[   10.429380] lp0: console ready
[   10.432762] NET3 PLIP version 2.4-parport gniibe@....co.jp
[   10.433719] plip0: Parallel port at 0x378, using IRQ 7.
[   10.453613] Linux agpgart interface v0.103
[   10.975166] ppdev: user-space parallel port driver
[   12.143279] rcu-torture: rcu_torture_read_exit: End of episode
[   14.166934] udevd (173) used greatest stack depth: 6280 bytes left
[   16.266823] uvesafb: Getting VBE info block failed (eax=0x4f00, err=1)
[   16.267957] uvesafb: vbe_init() failed with -22
[   16.268728] uvesafb: probe of uvesafb.0 failed with error -22
[   16.785570] urandom_read: 3 callbacks suppressed
[   16.785574] random: dd: uninitialized urandom read (512 bytes read)
[   17.024261] bootlogd (222) used greatest stack depth: 6276 bytes left
LKP: HOSTNAME vm-snb-i386-109, MAC 52:54:00:12:34:56, kernel 5.9.0-rc3-00323-gc50eb1ed654b5 2, serial console /dev/ttyS0
Poky (Yocto Project Reference Distro) 2.7+snapshot vm-snb-i386-109 /dev/ttyS0
[   18.137435] mount: mounting debug on /sys/kernel/debug failed: No such file or directory
[   25.848294] rcu-torture: rcu_torture_read_exit: Start of episode
[   25.855111] rcu-torture: rcu_torture_read_exit: End of episode
[   26.072692] random: fast init done
[   27.041201] sysrq: Emergency Sync
[   27.042059] sysrq: Resetting


To reproduce:

        # build kernel
	cd linux
	cp config-5.9.0-rc3-00323-gc50eb1ed654b5 .config
	make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 olddefconfig prepare modules_prepare bzImage

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email



Thanks,
lkp


View attachment "config-5.9.0-rc3-00323-gc50eb1ed654b5" of type "text/plain" (154218 bytes)

View attachment "job-script" of type "text/plain" (4598 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (13512 bytes)

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